Revert "Removes unnecessary api-paste.ini configuration"

This change should have never been merged b/c it appears to not
work for upgrades b/c of the precedence for configuration
lookups. It needs to be submitted together with code to remove
the previous configuration elements.

This reverts commit 3cf9a45458672862ce4e81a3ce45cd98112f93d4
Merge git://github.com/puppetlabs/puppetlabs-nova